IL95295A0 - Ferromagnetic compensation rings for high field strength magnets - Google Patents
Ferromagnetic compensation rings for high field strength magnetsInfo
- Publication number
- IL95295A0 IL95295A0 IL95295A IL9529590A IL95295A0 IL 95295 A0 IL95295 A0 IL 95295A0 IL 95295 A IL95295 A IL 95295A IL 9529590 A IL9529590 A IL 9529590A IL 95295 A0 IL95295 A0 IL 95295A0
- Authority
- IL
- Israel
- Prior art keywords
- field strength
- high field
- strength magnets
- compensation rings
- ferromagnetic compensation
- Prior art date
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R33/00—Arrangements or instruments for measuring magnetic variables
- G01R33/20—Arrangements or instruments for measuring magnetic variables involving magnetic resonance
- G01R33/28—Details of apparatus provided for in groups G01R33/44 - G01R33/64
- G01R33/38—Systems for generation, homogenisation or stabilisation of the main or gradient magnetic field
- G01R33/387—Compensation of inhomogeneities
- G01R33/3873—Compensation of inhomogeneities using ferromagnetic bodies ; Passive shimming
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R33/00—Arrangements or instruments for measuring magnetic variables
- G01R33/20—Arrangements or instruments for measuring magnetic variables involving magnetic resonance
- G01R33/28—Details of apparatus provided for in groups G01R33/44 - G01R33/64
- G01R33/42—Screening
- G01R33/421—Screening of main or gradient magnetic field
Landscapes
- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Epidemiology (AREA)
- Magnetic Resonance Imaging Apparatus (AREA)
- Electromagnets (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US07/397,238 US5001447A (en) | 1989-08-23 | 1989-08-23 | Ferromagnetic compensation rings for high field strength magnets |
Publications (2)
Publication Number | Publication Date |
---|---|
IL95295A0 true IL95295A0 (en) | 1991-06-30 |
IL95295A IL95295A (en) | 1994-06-24 |
Family
ID=23570384
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
IL9529590A IL95295A (en) | 1989-08-23 | 1990-08-06 | Ferromagnetic compensation rings for high field strength magnets |
Country Status (6)
Country | Link |
---|---|
US (1) | US5001447A (en) |
EP (1) | EP0414528B1 (en) |
JP (1) | JPH03138912A (en) |
CA (1) | CA2013936A1 (en) |
DE (1) | DE69030968T2 (en) |
IL (1) | IL95295A (en) |
Families Citing this family (20)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL9001300A (en) * | 1990-06-08 | 1992-01-02 | Koninkl Philips Electronics Nv | MAGNETIC SYSTEM FOR MAGNETIC RESONANCE. |
US5345208A (en) * | 1993-05-26 | 1994-09-06 | General Electric Company | Pole face design for a C-shaped superconducting magnet |
US5798680A (en) * | 1994-04-15 | 1998-08-25 | New York University | Strapped open magnetic structure |
JP3663262B2 (en) * | 1995-10-23 | 2005-06-22 | ゼネラル・エレクトリック・カンパニイ | Open magnetic resonance imaging magnet |
US5668516A (en) * | 1995-12-29 | 1997-09-16 | General Electric Company | Simplified active shield superconducting magnet assembly for magnetic resonance imaging |
US5594401A (en) * | 1996-02-20 | 1997-01-14 | General Electric Company | Closed superconductive magnet with uniform imaging volume |
US5721523A (en) * | 1996-08-26 | 1998-02-24 | General Electric Company | Compact MRI superconducting magnet |
EP0826978A1 (en) * | 1996-08-26 | 1998-03-04 | General Electric Company | Closed MRI magnet having compact design |
US6157276A (en) * | 1998-08-14 | 2000-12-05 | General Electric Company | MRI magnet assembly with non-conductive inner wall |
DE10251449B4 (en) | 2001-11-21 | 2004-12-30 | Siemens Ag | cryostat |
DE10251458B4 (en) | 2001-11-21 | 2007-12-13 | Siemens Ag | cryostat |
DE10354677B4 (en) * | 2003-11-22 | 2006-09-21 | Bruker Biospin Gmbh | Additional stray field shielding of a superconducting magnet coil system |
DE102004007291B4 (en) | 2004-02-14 | 2006-09-21 | Bruker Biospin Gmbh | Hybrid magnet arrangement |
DE602005012265D1 (en) * | 2004-06-17 | 2009-02-26 | Koninkl Philips Electronics Nv | MAGNETIC RESONANCE IMAGING SYSTEM WITH IRON SUPPORTED MAGNETIC FIELD GRADIENT SYSTEM |
US20060266053A1 (en) * | 2005-05-25 | 2006-11-30 | General Electric Company | Apparatus for thermal shielding of a superconducting magnet |
RU2544460C1 (en) * | 2014-04-15 | 2015-03-20 | Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Кубанский государственный технологический университет" (ФГБОУ ВПО "КубГТУ") | Magnetotherapeutic unit |
JP2017011236A (en) * | 2015-06-26 | 2017-01-12 | 株式会社神戸製鋼所 | Multilayer magnetic shield |
CN105243941A (en) * | 2015-11-24 | 2016-01-13 | 国网重庆市电力公司电力科学研究院 | Simulation model for inhibiting ferromagnetic resonance of voltage transformer |
GB2545735A (en) * | 2015-12-24 | 2017-06-28 | Siemens Healthcare Ltd | Cryostats for superconducting magnets |
GB2586493B (en) * | 2019-08-21 | 2021-08-18 | Siemens Healthcare Ltd | Method and apparatus for shimming a superconducting magnet. |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3245944A1 (en) * | 1982-12-11 | 1984-06-14 | Bruker Analytische Meßtechnik GmbH, 7512 Rheinstetten | ELECTROMAGNET FOR NMR TOMOGRAPHY |
JPH0640869B2 (en) * | 1984-01-18 | 1994-06-01 | 株式会社日立メディコ | ΝMR imaging device |
DE3572401D1 (en) * | 1984-10-12 | 1989-09-21 | Siemens Ag | Magnet arrangement with a screen device for a nuclear spin tomography installation |
US4646045A (en) * | 1985-03-25 | 1987-02-24 | General Electric Company | Aperture sized disc shaped end caps of a ferromagnetic shield for magnetic resonance magnets |
NL8502340A (en) * | 1985-08-26 | 1987-03-16 | Philips Nv | MAGNETIC RESONANCE DEVICE WITH FIELD HOMOGENIZING MAGNETIC ELEMENTS. |
GB2184243B (en) * | 1985-12-09 | 1989-12-20 | Picker Int Ltd | Electromagnet arrangements |
DE3769194D1 (en) * | 1986-04-21 | 1991-05-16 | Siemens Ag | FRAME STRUCTURE FOR A MAGNETIC SYSTEM OF A SYSTEM FOR CORE SPIN TOMOGRAPHY. |
US4698611A (en) * | 1986-12-03 | 1987-10-06 | General Electric Company | Passive shimming assembly for MR magnet |
US4724412A (en) * | 1987-08-03 | 1988-02-09 | General Electric Company | Method of determining coil arrangement of an actively shielded magnetic resonance magnet |
JPH01227407A (en) * | 1988-03-08 | 1989-09-11 | Toshiba Corp | Magnet for magnetic resonance imaging device |
US4931759A (en) * | 1989-04-06 | 1990-06-05 | General Atomics | Magnetic resonance imaging magnet having minimally symmetric ferromagnetic shield |
-
1989
- 1989-08-23 US US07/397,238 patent/US5001447A/en not_active Expired - Lifetime
-
1990
- 1990-04-05 CA CA002013936A patent/CA2013936A1/en not_active Abandoned
- 1990-08-06 IL IL9529590A patent/IL95295A/en active IP Right Grant
- 1990-08-20 JP JP2217287A patent/JPH03138912A/en active Granted
- 1990-08-22 EP EP90309219A patent/EP0414528B1/en not_active Expired - Lifetime
- 1990-08-22 DE DE69030968T patent/DE69030968T2/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
JPH03138912A (en) | 1991-06-13 |
EP0414528A2 (en) | 1991-02-27 |
CA2013936A1 (en) | 1991-02-23 |
JPH0580125B2 (en) | 1993-11-08 |
EP0414528B1 (en) | 1997-06-25 |
DE69030968T2 (en) | 1998-01-22 |
EP0414528A3 (en) | 1991-07-31 |
IL95295A (en) | 1994-06-24 |
DE69030968D1 (en) | 1997-07-31 |
US5001447A (en) | 1991-03-19 |
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Legal Events
Date | Code | Title | Description |
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FF | Patent granted | ||
KB | Patent renewed | ||
KB | Patent renewed | ||
KB | Patent renewed |